Can you do it at a slow pace alright? I'm not very good at tapping, myself.Also, I don't know about you, but I prefer to use my index finger instead of my middle finger. You do whatever feels comfortable.

Another thing to keep in mind:If you want to mute the strings better, tap the highest note with your index finger while holding the neck (near the fret you're tapping) with your pinky and thumb. This might help you nail down the accuracy aspect of the technique.

I use my middle finger to tap - this is so that I can keep my pick in it's normal grip between my index and thumb and transitioning quickly between picking and tapping and back again.Other than that it's just like regular legato - hammer the note firmly enough for it to sound, and pull off just like your would with your left hand with a slight flicking motion. Mute with the side of your right hand and your left hand fingers.

Remember tapping is a legato technique! So you want it to be smooth, like other people have said it does help to anchor your thumb on the guitar neck then which ever finger you use to tap with (usually index or middle) will be a bit stronger. Just take it slow and make sure each note gets a smooth even sound, also played for the same amount of time. Like I said though it's a legato technique so just treat your other hand like you are going to hammer on or pull off. I think most people have a harder time pulling off because they just lift the finger off the fret, make sure you move the finger down or up to get that pull off to sound right. I hope that all makes sense if it doesn't there is a Guthrie Govan lesson on tapping somewhere thats really good